Multiwavelength and parsec-scale properties of extragalactic jets

Abstract

Extragalactic jets originating from the central supermassive black holes of active galaxies are powerful, highly relativistic plasma outflows, emitting light from the radio up to the gamma-ray regime. The details of their formation, composition and emission mechanisms are still not completely clear. The combination of high-resolution observations using very long baseline interferometry (VLBI) and multiwavelength monitoring provides the best insight into these objects. Here, such a combined study of sources of the TANAMI sample is presented, investigating the parsec-scale and high-energy properties. The TANAMI program is a multiwavelength monitoring program of a sample of the radio and gamma-ray brightest extragalactic jets in the southern sky, below -30deg declination. We obtain the first-ever VLBI images for most of the sources, providing crucial information on the jet kinematics and brightness distribution at milliarcsecond resolution. Two particular sources are discussed in detail: PMN J1603-4904, which can be classified either as an atypical blazar or a gamma-ray loud (young) radio galaxy, and Centaurus A, the nearest radio-loud active galaxy. The VLBI kinematics of the innermost parsec of Centaurus A's jet result in a consistent picture of an accelerated jet flow with a spine-sheath like structure.

arXiv commentDoctoral Thesis Award Lecture 2015, AN 2016, 337, 7

References in corpus (53)

• Fermi Large Area Telescope Second Source Catalog
• A Unifying View of the Spectral Energy Distributions of Blazars
• Leptonic and Hadronic Modeling of Fermi-Detected Blazars
• MOJAVE. X. Parsec-Scale Jet Orientation Variations and Superluminal Motion in AGN
• Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. V. Multi-epoch VLBA Images
• Sub-milliarcsecond Imaging of Quasars and AGN
• DiFX: A software correlator for very long baseline interferometry using multi-processor computing environments
• The Australia Telescope 20 GHz Survey: The Source Catalogue
• Centaurus A - NGC 5128
• 2FHL: The Second Catalog of Hard Fermi-LAT Sources
• The Molonglo Galactic Plane Survey (MGPS-2): Compact Source Catalogue
• Spectroscopy of The Largest Ever Gamma-ray Selected BL Lac Sample
• Radio and X-ray observations of the jet in Centaurus A
• The Distance to NGC 5128 (Centaurus A)
• The First Fermi-LAT Catalog of Sources Above 10 GeV
• Discovery of very high energy gamma-ray emission from Centaurus A with H.E.S.S
• Spine-sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87
• A numerical simulation of the evolution and fate of a FRI jet. The case of 3C 31
• Spectral evolution of superluminal components in parsec-scale jets
• On the Evolution of and High-Energy Emission from GHz-Peaked-Spectrum Sources
• Gamma-ray flares from red giant/jet interactions in AGN
• TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry I. First-Epoch 8.4 GHz Images
• The Twin--Jet System in NGC 1052: VLBI-Scrutiny of the Obscuring Torus
• The COINS Sample - VLBA Identifications of Compact Symmetric Objects
• Discovery of a Sub-Parsec Radio Counterjet in the Nucleus of Centaurus A
• Clouds and red giants interacting with the base of AGN jets
• TANAMI monitoring of Centaurus A: The complex dynamics in the inner parsec of an extragalactic jet
• Gamma-ray emission from massive stars interacting with AGN jets
• TANAMI Blazars in the IceCube PeV Neutrino Fields
• Identification of the Early Fermi LAT Gamma-Ray Bright Objects with Extragalactic VLBI sources
• Star-Jet Interactions and Gamma-Ray Outbursts from 3C454.3
• The Hard X-ray Emission of Cen A
• First detection in gamma-rays of a young radio galaxy: Fermi-LAT observations of the Compact Symmetric Object PKS 1718-649
• NuSTAR and XMM-Newton Observations of the Hard X-Ray Spectrum of Centaurus A
• Dual-frequency VLBI study of Centaurus A on sub-parsec scales
• Extragalactic MeV gamma-ray emission from cocoons of young radio galaxies
• The unusual multiwavelength properties of the gamma-ray source PMNJ1603-4904
• Suzaku view of X-ray Spectral Variability of the Radio Galaxy Centaurus A : Partial Covering Absorber, Reflector, and Possible Jet Component
• New prediction of extragalactic GeV gamma-ray emission from radio lobes of young AGN jets
• The Gamma-Ray Emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy PKS 2004-447 I. The X-Ray View
• The millimeter-wave continuum spectrum of Centaurus A and its nucleus
• The TANAMI Multiwavelength Program: Dynamic SEDs of Southern Blazars
• Fermi-LAT and Suzaku Observations of the Radio Galaxy Centaurus B
• Multi-Wavelength Observations of PKS 2142-75 during Active and Quiescent Gamma-Ray States
• A redshifted Fe K$\alpha$ line from the unusual gamma-ray source PMN J1603-4904
• Radio and Gamma-ray Properties of Extragalactic Jets from the TANAMI Sample
• Optical-NIR spectroscopy of the puzzling gamma-ray source 3FGL 1603.9-4903/PMN J1603-4904 with X-shooter
• ANTARES Constrains a Blazar Origin of Two IceCube PeV Neutrino Events
• TANAMI - Multiwavelength and Multimessenger Observations of Active Galaxies
• On leptonic models for blazars in the Fermi era
• Near infrared and gamma-ray monitoring of TANAMI gamma-ray bright sources
• High Resolution Rapid Response observations of compact radio sources with the Ceduna Hobart Interferometer (CHI)